Lock



M. TROY 2,071,092

LOCK

Filed Nov. 5, 1955 s sheets-'sheet 1 Feb. 16, 1937.

INVENTOR Maf/c Troy BY- ATTORN EY WITN ESSES ZM M. TROY Feb. 16, 1937.

LOCK

, 1935 3 Sheets-Sheet 2 Filed Nov. 5

INVENTOR a/r ,7d/ay BY www! www@ wlTNEssEs MW ATTORNEYS M. TROY Feb. 16,1937.

LOCK

3 Sheets-Sheet 3 Filed NOV. 5, 1935 elm. f

WITN ESSES ZW l ATTORNEYS Patented Feb. 16, 1937 UNITED STATES PATENTOFFICE 4 Claims.

This invention relates to a lock which is designed and adapted to beused on the doors of the inner cylinder of a laundry washer.

The principal object of the invention is to incorporate means inconnection with each door of an inner cylinder of a laundry washer insuch manner that there will not be any projecting portions or sharpedges on the inside to tear or otherwise damage the articles beingwashed within the cylinder.

A further object of the invention is the provision oaf improved means ofthe indicated character which may be readily operated to tightly clampor hold a door closed against its frame to avoid damage to the articlesbeing washed, and also to be readily operated to release the door sothat it may be opened to remove the `.washed articles.

A further object of the invention is the provision of means of theindicated character adapted to exert clamping pressure at a plurality ofspaced points so as to tightly clamp a cross sectionally curved dooragainst its frame for the purposes stated hereinabove.

With the foregoing and other objects in viewV the invention resides inthe combinations, constructions and functions of the parts hereinafterfully described and illustrated in the accompanying drawings, in which-Figure 1 is an outside View oi an inner cylinder unit of a washerembodying the invention, and showing a door in closed position and itslocking mechanism released.

Figure 2 is a View similar to Figure 1, but showing the lockingmechanism locked to exert clamping pressure on-the door.

Figure 3 is an enlarged section taken on the line 3-3 of Figure l andlooking in the direction indicated by the arrows.

Figure 4 is an enlarged section taken on the line 4--4 of Figure l andlooking in the direction indicated by the arrows.

Figure 5 is an enlarged section showing one of the latch members engagedand how it exerts clamping pressure to press the door against its frame.

Figure 6 is an enlarged section taken on the line 6-6 of Figure 2showing another one of the latch members engaged for the purpose ofexerting pressure to press the door against its frame.

Figure 7 is an enlarged view of the gear set and its crank spindle foroperating the locking mechanism.

Figure 8 is a section taken on the line 8-8 of Figure 7 and looking inthe direction 'indicated by the arrows.

In the illustrated embodiment of the invention there is shown a singleunit of an inner cylinder of a washer used in laundries for Washingvarious articles. This inner cylinder is made up of a plurality ofsimilar units which are bolted together end to end, and each of saidunits is subdivided into a plurality of sector-shaped compartments, eachof which has a door and door opening for the introduction of thearticles to be washed into the compartment and for their removaltherefrom. The cylinder Il) is perforated in order to allow the Washingsolution to percolate through the articles being washed as the cylinderis being rotated. The cylinder unit has a plurality of inwardlyprojecting hollow ribs` |I which are also perforated.y One rib I I isadjacent one side of the door opening. A door frame surrounds the'dooropening which is rectangular. The door frame consists of a flange I2 onone of the radial walls of the cylinder, a strip I3 secured to a flangeI4 of the rib II, and rings I5. The ange I2 and the strip I3 aredisposed at opposite ends of the door opening and the rings I5 aredisposed, respectively, at opposite sides of said opening. 'I'he dooropening is controlled by a door I6 which fits the frame surrounding theopening, said door being arcuate or circumferentially curved. The doorhas a plurality of hand holds I'I at' one end thereot` for sliding thedoor to opened and closed positions. A rabbeted strip I8 is secured tothe flange I2 and serves as a stop to limit the sliding movement of thedoor I6 to its closed position. Parting rings or spacers I9 are secured,respectively, to the rings I5, and guide rings surround the rings I9 andare secured thereto. The rings I5, I9 and 20 constitute guides for thedoor I6.

The door locking, releasing and clamping mechanism consists of thefollowing parts. Four latch members 2| are mounted on the outside of thedoor I6. A pair of the latch members 2| is arranged near each end of thedoor. Each latch member 2| is held in place for axial movement by abearing 22 secured to the door I6 on the outside. Each latch member 2|has a conical outer end 23. The latch members 2| are engageable,respectively, with keepers 24 secured to the rings 20. A pair of thekeepers 24 are arranged at each end of the door opening so as to receivethe outer ends 23 of the latch members 2|, respectively, when the doorI6 is in its closed position against the stop I8. Each keeper 24 has aconical hole therein slightly larger than the conical end 23V Links 2leach have one end pivotallyv Y Vreverse rotation of the disk 26 becausethe gearV and63. A'forced under'the strip I8 thereby tightly pressingl"saidend against the frame.

adjustments to compensate for wear or other variations. The disc 26 hasa radial arm 3|. Linkage is provided consisting of members 32, 33 and34, respectively. The member 32 has one end pivotally connected with thearm 3| as at 35, and its other end is pivotally connected with one endof the member 33, as at 36. The other end of the member 33 has a boltand slot connection 3l with one end of the member 34. The member 33 hassliding movement in a guide 38 secured to the door. Turnable parts ordiscs 39 are mounted on studs 4). respectively, secured to the door i3.Each disc 39 Ahas an arm 4|, and there being a bolt and slot connection42 between each arm 4| and the link member 34. Each disc 33 has an arm43 pivotally connected with one end of a link 44 as at 45, and the otherend of said link 44 being pivotally connected with a latch member 2|, asat 46. Ea-ch link 44 has a turn-buckle 41 to increase or decrease thelength thereof. A gear set or equivalent means is employed `for turningthe disc 26 to actuate the latch' members 2| through the intervention ofthe linkage and the discs 39. The gear set consists of va crank`'spindle 50 which is mounted transversely of theA door i6 and has anouter nonc'irc'ular end 5| to accommodate a suitable crank. A beveledgear 52 on the spindle 50 meshes with a beveled gear 53 on a worm 54which meshes with Va Worm gear 55 'fast on a shaft 5B. The shaft'Eextends'transversely with respect to the door and has (an outernon-circular end 51 which isfdi'sposed 'in a similarly shaped hole inthe disc-a` to cause the latter to rotate in response to the rotation ofthe shaft 56. The disc 25 is held on the shaft 56 by a nut and Washer 58on the shaft 55. The gear set is' enclosed in a casing or housing 59secured to the inside of the door i6 as at 61B. The shaft v585 of the'gear 55 being directly connected to the disk 26 prevents 55 can notturn the Worm 54; hence unintentional release of Ithe latch members Willbe prevented.

lfk desired, Vas shown in the present instance, another latch member 6iof a somewhat dierent typafrom the latch members 2| may be employed. Thelatch member 6| is'pivotally connected as at $2 with one end of a linkmember 53h-Whose other end is connected With the link Y.memberr34by abolt and slot connection 64. The

link member 63 is guided by a guide bearing 65 ,secured to the door I6.`A keeper block 56 is sefured Within the rib- Il in line with the latchmember ill. The block 6B has an oblique notch 5l .therein Which receivesthe oblique'bill 68 of the latch member 6| When the door I6 is in 3l'setting up a camming action and thus forcefully' press the adjacent endof the door |6 tightly against the frame strip |3, by manipulatingthe'spindle`53, and through the intervention of the'disc 126, arm 3|,and link members 32, 33, 34 The other end of the door I6 Will be 'Fromthe foregoing it will be obvious that the door IB may be readily slidinto its opened and closed-positions by means of the hand hold -When thedoor |'6 is in its closed position it may be effectively secured orlocked by manually operating the spindle 50 by a suitable crank whichwill cause all of the latch members to be engaged with their keepers ordisengaged therefrom. It will be obvious that by reason o-f theprovision and arrangement of parts set forth the door I6 Will be clampedtightly all around against its frame; that there are no sharp edgesprojecting inside of the cylinder compartment to damage any of thearticles being Washed; and that the locking and releasing of the door I6may be conveniently done.

I claim:

1. A lock for a door including latch mechanism adapted to be used withkeepers, comprising primary latch"mem-bers slidab'ly mounted on saiddoor at opposite sides thereof engageab-le Vwith and disengageable fromsaid keepers respectively when said door is in its closed position, saidprimary latch Vmembers embodying camming means cooperating With saidkeepers yto exert pressure on the sides of the door vwhen the primary'latch members [are engaged with the keepers in such manner that thesides-of the door vvvill be forced tightly closed, an auxiliary latchmechanism at one .end of said door, a llink mounted for move--ment-.on'saidzdoor longitudinallyathereof and having one end vpivotallyconnected with said auxiliary 'latch 'memben vmeans connected with saidlink'and saidlfprimary latch members forv causing the primary latch.members and the auxiliary latch member to function simultaneously, saidmeans causing said primary latch members to be forced outwardly intosaid keepers While pulling said auxiliary latch member into functioningposition, and power means connected vwith the rst mentioned means foractuating said rst lmentioned means, said power means including a Wormgear set which prevents unintentional release of- Ythe'variofus latchmembers.

2. In a locking mechanism of the character described, latch mechanismadapted to be used with keepers, comprising latch members for securing aclosure in closed position, there being one of said keepers for 'eachofsaid latch members, and means connected'with said latch members whichis operable gto ,move said latch members simultaneously into and out ofengagement With their keepers, said means including a gear set whichfunctions to prevent unintentional operation of said means andconsequent releaseof the latch members.

3. vIn a locking mechanism yof the character described, a latchmechanism'adapted to be used With keepers, comprising latch members forsecuring a'closureinclosed position, there being one of said keepers foreach of said latch mem'- vbers, a rotary part,'means connectingthe'latch members with -said Ipart, and gearing including a worm andgear for-actuatinglsaid means.

4. In a locking mechanism of the character described, va latch'mechanism ladapted to`be `used withkeeperscomprising a` plurality o-fcam latch mernbersmounted for movement 'with respect to said keepersrespectively, and means connected With said latch members which isoperable to including a gear set which prevents unintentional release ofthe latch members.

' MAX TROY.

